Angry Birds: St Patrick’s Day announced

The next holiday to be celebrated by hit physics puzzler Angry Birds's Seasons expansion is St Patrick's Day, developer Rovio has announced.

Making the announcement during a presentation today at the Game Developer's conference in San Francisco, Rovio chief Peter Vesterbacka promised the update, which will presumably be available around 17th March, is "very green" and boasts "more pigs than ever".

The smartphone phenomenon has already seen free Halloween, Christmas and Valentine's-themed level packs, and Vesterbacka promised there are more to come.

And that's not all. The Finnish studio's bossman also revealed that its feather-flinging juggernaut goes off on another tangent on 22nd March with Angry Birds: Rio, a tie-in with 20th Century Fox's forthcoming animated flick.